MODBUS Register Map v1.44
248083317-1 Rev 4 B-11
Note: Not all data types
have units. LWS Particle
Counters may use units
not listed in the table.
Units are stored as 4 character ASCII strings across 2 registers. If the
Units string contains less than 4 characters or no characters at all, the
rest of the string is padded with NULLs. Note that a Units string using
all 4 characters does not end with a NULL.
Table B-10 shows units that may be sent by the device. Some of these
units are not currently used but are reserved for future use.
Table B-10 Data Units
Units Description Units Description
# Count (For Particles) ft/m Feet per minute
% Percent m/s Meters per second
s Seconds "H2O Inches of water
min Minutes "Hg Inches of mercury
hour Hours mmWa Millimeters of water
F Fahrenheit mmHg Millimeters of mercury
C Celsius cmHg Centimeters of mercury
K Kelvin Pa Pascals
ft Feet kPa Kilopascals
m Meters Bar Bar
ft^2 Square feet mBar Milli-bar
m^2 Square meters V Volts
ft^3 Cubic feet mV Milli-volts
m^3 Cubic meters A Amperes
L Liters mA Milli-amps
CFM Cubic feet per minute Ohm Ohms
CMM Cubic meters per minute mOhm Milli-ohm
L/m Liters per minute
p/f3 Particles per cubic foot
p/m3 Particles per cubic meter
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